For the 25 pin DSUB the correct connections are: 

GND (7), RXD (3), TXD (2), RTS (4)

For the 9 pin DSUB the correct connections are:

GND (5), RXD (2), TXD (3), RTS (7)

There is also something wrong with the oscillator but it can be used
like it is without big problem. To correct the oscillator, disconnect
the pin 3 of the 74HC04 from all the other parts, let the other
connections as it is and connect the pin 3 direct to pin 2.
